This review delves into the Truvalux 12.8V 100Ah LiFePO4 battery, a budget-friendly option vying for a place in the competitive LiFePO4 market. We rigorously tested its capacity, functionality, and build quality, scrutinizing both its performance under load and the accuracy of its accompanying Bluetooth app. From initial charging to a comprehensive discharge test, we assessed voltage readings, current draw, and overall energy delivery to determine if this battery truly lives up to its claims. Particular attention was paid to the battery's internal construction, the functionality of its Battery Management System (BMS), and the user experience provided by the included software.This in-depth evaluation covers everything from the unboxing experience and component analysis to real-world performance data. We examine the battery's capacity, its ability to maintain a balanced charge, and the accuracy of its real-time monitoring capabilities. We also explore the features of the included Bluetooth app and discuss its strengths and weaknesses. Ultimately, this review aims to provide a comprehensive assessment of the Truvalux battery's value proposition, helping readers decide if it's a worthwhile investment for their power needs.
Pros And Cons
- Smart Bluetooth BMS with app support for monitoring.
- Delivered rated capacity of 1280 Wh.
- Includes two sets of terminal bolts (long and short).
- Comes with user manual, after-sales service card, welcome card, and quick start guide.
- 5-year comprehensive warranty (Amazon purchases only).
- High-quality plastic case with sturdy handles and brass terminals.
- Modular cell group assembly.
- High-density foam padding for protection.
- Good wire gauge size (6 gauge positive, 8 gauge negative).
- Includes high and low-temperature charge protection.
- Multi-position mounting angles.
- Clean construction and orderly internal components.
- Hydraulic crimp connections.
- True Velux branded BMS (appears to be a rebranded JBD JBIA BMS).
- Bluetooth app has a bug and doesn't track all the way down to zero.
- Some use of hot glue instead of silicone sealant observed during teardown.
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Capacity Test and Bluetooth Accuracy
The Truvalux battery underwent a capacity test after a 24-hour charge. The charging cycle was monitored via the Bluetooth app and a standalone meter. The app and meter showed near-identical voltage readings, indicating good accuracy of the Bluetooth data.
The battery was fully charged at 14.6 volts, demonstrating a consistent voltage taper during the charging process. This suggests the internal cells maintained a balanced charge.
The Bluetooth app displayed real-time voltage (14.0V), which closely matched the standalone meter reading of 14.04V. This demonstrates good initial accuracy and reliability of the Bluetooth reporting.
Capacity Test Results and Bluetooth App Features
The capacity test utilized a standard setup including an energy meter and inverter. The initial battery temperature was 81°F.
With a 54-amp load, the battery delivered approximately 700 watts. The Bluetooth app displayed a remaining time of 1 hour and 52 minutes, and a state of charge around 97%.
The app boasts various displays including a dashboard for real-time data, cell voltage deviations, history of voltage and current, and available capacity (amp-hours).
Battery Performance and Bluetooth App Limitations
The battery delivered its rated 1280 Wh capacity during the test. The Bluetooth app reported around 1% state of charge remaining near the end of the test, highlighting a possible minor bug in the app’s tracking.
The inverter shut down due to low voltage at approximately 1333 Wh. This equates to 104.14 Ah; slightly over the rated capacity.
While the battery performed admirably, the Bluetooth app showed some limitations in its tracking, especially towards the end of discharge. It did not accurately track to 0% state of charge.
Package Contents and Warranty
The Truvalux battery package includes the battery itself, two sets of terminal bolts (long and short), a user manual, an after-sales service card, a welcome card with a discount offer, and a quick start guide.
The manual highlights safety precautions and specifications, including the battery's multi-position mounting capabilities. The 5-year warranty is limited to purchases made through Amazon.com.
The package also includes information on the battery’s low-temperature charge protection capabilities. This comprehensive packaging ensures users have all the necessary information and support.
Battery Teardown and Internal Components
The battery's case reveals a clean and organized internal construction. The positive and negative leads employ high-gauge, silicone-jacketed wires.
The BMS features a temperature sensor and is securely mounted on a separate epoxy board that is glued to the battery cells. There is a high-temperature thermal switch integrated into the BMS.
The cell assembly uses a modular design with snap tabs to maintain even spacing between cells. This makes the battery easy to maintain.
BMS Identification and High/Low Temperature Protection
The BMS appears to be a rebranded or custom JBD BMS, a reputable manufacturer known for reliable and easily programmable units.
Testing confirmed the functionality of high and low-temperature charging protection. Both triggers successfully shut off charging upon exceeding or falling below their respective thresholds.
The fast response times of the temperature protection features highlight the responsiveness and effectiveness of the BMS.
Final Thoughts and Conclusion
The Truvalux battery demonstrated impressive performance and build quality, especially considering it's a new brand. The capacity test results, solid construction, and well-integrated safety features make it a strong contender in the budget LiFePO4 market.
Although the Bluetooth app has minor limitations in tracking to 0% charge, its overall features are quite useful for monitoring the battery’s performance.
Overall, this Truvalux battery shows a lot of promise in the budget LiFePO4 category. With its high quality build, reliable performance, and comprehensive features, it's definitely worth considering.